What would you do if your young son was desperate to become a girl--or if your daughter wanted to be a boy? This shocking yet touching documentary offers a rare, intimate look into the world of children who believe they were born the wrong sex. Diagnosed with gender identity disorder, their childhoods include puberty blockers, hormone injections, cross-dressing and a struggle for social acceptance. How far are they willing to go to change their gender? How young is too young? And how should parents respond?